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(No Model.) 2 Sheets-Sheet 1.

H. M. BYLLBSBY. ELEGTRIG METER. No. 373,010. Patented Nov. 8; 1887.

Q/Vi/mem- I jg @513- Gum-1 1 013 0 (No Model.)

2 Sheets-Sheet 2.

H. M, BYLLESBY.

ELECTRIC METER.

Patented Nov. 8, 1887 N, PETERS. Vhclmumogmphqr Washington. D. C-

UNITED STATES PATENT @FFICE.

HENRY M. BYLLESBY, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO GEORGE WESTINGHOUSE, J 1%., OF SAME PLACE.

ELECTRIC METER.

SPECIFICATION forming part of Letters Patent No. 373,010, dated November 8, 1887.

Application filed February 19, 1887. Serial No. 22 2155. (No model.)

To all whom, it may concern:

Be it known that I, HENRY M. BYLLESBY, a citizen of the United States, residing in Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain newand useful Improvements in Electric Meters, of which the following is a specification.

The invention relates to the class of apparatus employed for measuring the current used in I operating translating devices connected with a central supply system.

The object of the invention is to provide a reliable, convenient, and accurate measuring device for recording the amperes of current used by individual translating systems or at sub-stations connected therewith. Heretofore it has been customary to accomplish these results by means of various electromagnetic and electrolytic devices affected by variations in the current, such variations being themselves recorded or varying the amount of ,work accomplished by the current. The present invention differs from these fundamentally in that it aims to modify the action ofa mechanical movement directly as'the current which is to be measured varies. This mechanical movement may with advantage be an ordinary clock-train suitably modified to suit the requirements. There are several methods whereby this result may be attained. The present invention relates, however, especially to an 'electro magnetic device for modifying the movements of the balance-wheel of a clock; and it consists, in general terms, in constructing a balance-wheel in the manner of a socalled Gramme ring, and acting upon the same by means of :thecurrent supplied to the translating devices. This may be conveniently accomplished by creating a field for the balance-wheel by slightly magnetizing a suitable field-magnet applied thereto, or by means of a solenoid. Any increase in the current traversing the coils of this magnet will occasion a corresponding retardation on the part of the balance-wheel. A decrease in the current, on the other hand,will allow the balance-wheel to move more rapidly. The clocktrain therefore is regulated to move at a given rate, thereby producing a determined record when no currentis used. Any increase of cur:

rent, therefore, occasioning a corresponding decrease in the rate of the movement of the clock-train will be indicated by the cloclgand thus the amount of current employed will be registered.

It may sometimes be desired to apply the magnetic field to some wheel other than the balance-wheel connected with the train and moving at a high rate of speed in a continuous direction. Such an attachment may be made much in the manner that the fly-wheel is applied to the striking mechanism of a clock-movement.

In the accompanying drawings, Figure l is an elevation illustrating the general construction of the meter. Figs. 2 and 3 illustrate modifications.

Referring to the figures, L L represent a main line supplied by currents from a central station. From these main conductors feeders or sub conductors l and Z are derived. These are designed to supply a local system of translating devicessuch, for instance, as are represented at d, for use in an isolated house. One of the conductors, 1, has its circuit through the coils a of the electro-inagnet A. This constitutes a field-magnet for an armature, b. The armature is wound with a coil, 1), of insulated wire constituting a closed circuit. The clock-train is of any suitable construction, preferably organized to move at a slow rate, so that it may not require winding except at long intervals. It is constructed with a pointer or indicator, e,which moves at a rate dependent upon the vibrations of the balance-wheel b. It is well understood that the rate at which this balance wheel will vibrate may be modified by modifying the magnetization of the field-magnet A. The parts are so organized that when no current is employed, the translating devices (I not being in operation, the balance wheel moves at its highest normal speed and the record given by the indicator will be a predetermined amount. The difference between this normal amount and that which is actually registered will indicate the amount of current which is used in operating the translating devices d, for the reason that the current traversing the coil a of the field-magnet results in a corresponding retardation in the movement of the balancewheel.

The invention, as thus far describcd,is especiallyapplicable to systems in which continuous currents are employed. In instances where it is desired to employ alternating electric currents the organization illustrated in Fig. 2 may be adopted. This consists in replacing the field-magnet A by a solenoid, A, acting directly upon the balance-wheel. The same result, however, is secured by this system as by the other.

In Fig. 3 the field-magnet is illustrated as applied to a wheel, 9, of the train, which is constructed to revolve in a continuous direction at a high rate of speed. The rate at which it revolves, however, will be modified, as will be readily understood, by the variations in the intensity of the field. This is equally applicable to continuous-current and alternate-eurrent systems, in the one instance an electromagnet and in the other a solenoid being employed for creating a field.

I claim as my invention- 1. The combination of a clock-movement, a 2 5 balance-wheel moving alternately in opposite directions controlling the rate of movement of the same, a coil of wire wound upon the balance-wheel and closed upon itself, an electric circuit, and an electromagnetincluded in said circuit and acting upon said balancewheel.

2. The combination, with aclock-movement and its balance-wheel, of a coil of insulated wire wound uponsaid balance-wheel and closed upon itselfland a magnetic field in which said balance-wheel moves,and means for modifying the intensity of said field.

In testimony whereof I have hereunto subscribed my name this 8th day of December, 40 A. D. 1886.

HENRY M. BYLLESBY.

Witnesses:

CHARLES A. TERRY, OLIVER B. SHALLENBERGER. 

